what is dns cache poisoning

Topic discussion: What is the difference between php code cache and browser cache? Lt; meta nbsp; http-equivCache-Control nbsp; contentmax-age60 gt; nbsp; add the above section to a page, browser page cache is set to 1 minute

DNS is the abbreviation of English domain Name System, which is the meaning of domain name resolution server, namely domain name Management system. Its role in the Internet is to transform the domain name into an IP address that the network can identify. First of all, to know that the Internet web site

The difference between the DNS server on Fedora7 and earlier versions-Linux Enterprise Application-Linux server application information. The following is a detailed description. Many of my friends refer to documents on the platform before RHEL4 or Fedora core5. On Fedora 7, many things have changed. This article briefly introduces the corresponding methods. Software List Bind-libs-9.4.0-6.fc7 Bind-chroot-9

Http://zhangbin.blog.51cto.com/666869/286257 1. recursive query:Generally, recursive queries are performed between the client and the server. After a request is sent from the client to the DNS server, if the DNS server itself cannot be resolved, a query request is sent to another

, the city people no longer need to be in a bit bitter force queuing to buy a ticket. CDN can be understood as distributed in each county train ticket consignment point, users browsing the site, CDN will choose a nearest to the user Cdn Edge node to respond to user requests, so the request of Hainan Mobile users will not go all the way to Beijing Telecom Room server (assuming the source station deployed in Beijing Telecom room) On the. The advantages of CDN are obvious: (1) The CDN node solves

This article mainly introduces what the HTML5 offline cache Manifest is, and explains what the HTML5 offline cache Manifest is for you. If you are interested, you can refer to the web app which

high-speed cache memory between the CPU register and the primary memory called the L1 cache, it can be accessed within 2-4 clock periods. Later, it was found that there was a large gap between the L1 high-speed cache and the primary storage, and a faster L2 cache was inserted between the L1 high-speed

What is the difference between the Varnish/squid/nginx cache? SQUID is the most comprehensive, but the architecture is too old, performance is not bad varnish is memory

Someone asked me this question recently. I personally have no practical experience in this field. My personal idea is that it takes some time to access the database and write data into the cache. This may cause some earlier requests to directly read the database. When this part of data is to be written to the cache, it

create sequence name Increment Span style= "COLOR: #0000ff" >by x // x for Growth interval Start with x // x is the initial value MaxValue x // x MinValue x // x is the lowest value CYCL E // cyclic use, when reaching the maximum or minimum, from the new build object CA Che x // set the number of cached (that is, memory) sequence values A sequence

SQUID is the most versatile, but the architecture is too old, performance is not goodVarnish is a memory cache, the speed is first-class, but the memory cache also limits its capacity,

A level three cache is designed to read data that is not hit by a level two cache, where only about 5% of the data in a CPU with level three cache needs to be called from memory, which further increases CPU efficiency. It works by using a faster storage device to keep a copy

What is the difference between a solid-state hard disk and a cache disk? Using a solid-state hard disk directly to do a cache disk is different from directly using solid-state hard disk to do the system disk directly on the solid-state hard disk reading data, solid-state ha

What is the IE browser cache? Caching refers to the temporary file Exchange area, where computers put the most commonly used files out of storage and put them in the cache temporarily, just like putting tools and materials on a workbench, which is more convenient than going

Original from http://blog.csdn.net/xiaoquanhuang/article/details/66137051) Intuitive understandingDepth is actually the distance of the pixel in the 3d world, and the depth cache stores the depth value of each pixel point (drawn on the screen)! The depth test determines whether to draw a farther pixel point (or a closer pixel point), which is usually relatively c

Cache is a high-speed cache. How does Cache improve system performance and speed? Can I use cache to improve performance in any situation? Is it because the more cache

Cache is used in English. A special memory subsystem that copies frequently used data to facilitate fast CPU access. Memory's high-speed buffer memory stores the content of frequently accessed Ram locations and the storage addresses of these data items. When the processor references an address in the memory, the cache checks whether the address exists. If the add

Cached cache is cache, I think a lot of people to his first impression must be like me, I feel he will improve the system performance and speed of operation. Do. NET to launch the cache is really the original intention is this. So

Intel Smart Cache Technology (Intel Advanced Smart Cache) is one of the 5 innovations included in the Intel Core Microarchitecture introduced in 2006, designed for multi-core processors that enable each kernel to dynamically leverage up to 100% of available level two cache resources. And at the same time fetch data fro